数据范围里面有 $1 \le N \le 10 ^ 4$，而你的数组只开了 $10 ^ 3$，当然会错
by ATZdhjeb @ 2023-07-20 19:47:20
1. 数组开小了
2.
```cpp
else{
f[find(y)] = f[z];
}
```
应改为 f[find(y)] = find[find()z]。
by IGJHL @ 2023-07-20 19:48:15
谢谢大佬，但为啥还是MLE
by wuhaoyu15 @ 2023-07-20 19:49:01
@[wuhaoyu15](/user/768270) 我这里过了
by IGJHL @ 2023-07-20 19:49:44
@[IGJHL](/user/357463) 谢谢，AC了
by wuhaoyu15 @ 2023-07-20 19:50:57